sfc: Remove obsolete function efx_dev_name()

	return efx->net_dev->reg_state == NETREG_REGISTERED;

}

/* Net device name, for inclusion in log messages if it has been registered.

 * Use efx->name not efx->net_dev->name so that races with (un)registration

 * are harmless.

 */

static inline const char *efx_dev_name(struct efx_nic *efx)

{

	return efx_dev_registered(efx) ? efx->name : "";

}

static inline unsigned int efx_port_num(struct efx_nic *efx)

{

	return efx->net_dev->dev_id;